An SI fiber is single mode at 1.4 um but not at shorter wavelengths; n1 = 1.465 and n2 = 1.46. Compute the core radius. Find the number of modes at 0.8, 0.85, and 0.9 um using the mode chart.
In: Electrical Engineering
A $ 5000 bond with a coupon rate of 5.9% paid semiannually has two years to maturity and a yield to maturity of 6.7%. If interest rates fall and the yield to maturity decreases by 0.8%, what will happen to the price of the bond?
In: Finance
A manufacturer knows that their items have a normally distributed length, with a mean of 5.7 inches, and standard deviation of 0.8 inches. If one item is chosen at random, what is the probability that it is less than 7.2 inches long?
In: Statistics and Probability
In: Biology
A 0.8-km concrete lined canal carries a discharge of 1.20 m3/s. Determine the head loss along the channel if the width is 2 m and the flow depth is at 1.2 m. Assume n = 0.018
In: Civil Engineering
The weights of individuals who seek a helicopter ride in an amusement park have a mean of 180 lb and a standard deviation of 15 lb. The helicopter can carry five persons but has a maximum weight capacity of 1000 lb. What is the probability that the helicopter will not take off with five persons aboard? (Hint. Apply the central limit theorem.)
In: Math
A Sheraton Hotel bond has a par value of $1,000, and has a coupon rate of 7.25%. The coupon in paid monthly. The investor's rate of return is 9%. The bond will mature in 12 years, and the investor is planning to keep this bond until maturity. Based on this information, the value of this bond is equal to:
A. $817.85
B. $871.85
C. $858.71
D. $885.71
In: Finance
Peter Morgan sells pigeon pies from his pushcart in Central Park. Due to the abundant supplies of raw materials, his costs are zero. The demand schedule for his pigeon pies is p(y) =80-y/4 . What level of output will maximize Peter’s profits?
164
480
32
320
None of the above
In: Economics
You are camping in Glacier National Park. In the midst of a glacier canyon, you make a loud holler. You hear an echo 1.22 seconds later. A. How far away are the canyon walls if you assume that the speed of sound in air is 343m/s? B. If the temp of the air drops significantly, what would happen to the speed of the sound in the air?
In: Physics
Ada Hotel Group has set up a pension fund for employee benefits. The company plans to put $50,000 in the fund at the end of each quarter. If this is a 20-year fund that earns 6.4% annual interest compounded quarterly, what would be fund balance at the end of 20 years?
a. $7,459,234.56
b. $9,268,201.30
c. $8,001,194.75
d. $10,238,430.10
In: Finance